CVE-2026-91960

A flaw was found in FreeRDP. A remote attacker, specifically a malicious RD Gateway peer, could send a crafted WebSocket Ping frame with an extended payload length. This action triggers an an integer overflow in the StreamEnsureRemainingCapacity function, leading to an integer wraparound and a...

CVE-2026-91959

A flaw was found in FreeRDP. A remote attacker can exploit a buffer over-read vulnerability within the RPC Remote Procedure Call gateway transport parser by sending a malicious BINDACK Protocol Data Unit PDU with a truncated result entry. This can lead to a process abort, resulting in a Denial of...

CVE-2026-91958

A flaw was found in FreeRDP. This vulnerability allows a remote attacker to trigger out-of-bounds memory access by crafting a malicious Remote Desktop Protocol RDP connection file. When a user opens this file, the FreeRDP client fails to properly validate array values, leading to a heap buffer...

CVE-2026-91956

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol RDP server can exploit an out-of-bounds read vulnerability in the URBDRC USB device redirection channel. By sending a specially crafted message, the server can cause the FreeRDP client to read beyond its allocated memory, leading to...

CVE-2026-91954

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol RDP server can trigger a null pointer dereference in the gdisurfacebits function by sending a specially crafted Surface Bits command that claims to use the NSCodec codec ID. This vulnerability exists even when the NSCodec is disable...

CVE-2026-91953

A flaw was found in FreeRDP. A malicious RDP Remote Desktop Protocol server or a man-in-the-middle attacker could exploit a heap buffer overflow vulnerability during connection negotiation, prior to authentication. By sending a specially crafted Server Redirection PDU Protocol Data Unit with an...

CVE-2026-91952

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol RDP server can send specially crafted AVC444 graphics updates. This can cause the pooldecoderect function to enter an infinite loop when decoding AVC444 metablocks with an excessive number of region rectangles. The vulnerability lea...

CVE-2026-91951

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol RDP server can send a specially crafted USB redirection message to the urbdrc client channel. This can trigger an out-of-bounds write, leading to a denial of service DoS for the client when verbose asserts are enabled. Mitigation To...

CVE-2026-91946

A flaw was found in FreeRDP. This information disclosure vulnerability exists in the RDPGFX server's ResetGraphics Protocol Data Unit PDU serializer. It fails to properly initialize padding bytes, allowing a remote attacker to receive uninitialized heap memory. This can lead to the disclosure of...

CVE-2026-91945

A flaw was found in FreeRDP. Authenticated RDP clients can exploit an out-of-bounds read vulnerability in smartcard response decoders. This occurs because the decoders fail to validate the length of Answer to Reset ATR fields against fixed inline arrays. By sending oversized ATR lengths, an...

CVE-2026-91964

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol RDP server can exploit a heap-based buffer overflow vulnerability in the negosendnegotiationrequest function. By sending a specially crafted Server Redirection PDU message with an attacker-controlled LoadBalanceInfo field, the serve...

CVE-2026-91963

A flaw was found in FreeRDP. An uninitialized heap memory disclosure vulnerability exists in the urbdrc USB redirection channel. A malicious Remote Desktop Protocol RDP server can exploit this by inducing failing USB transfers, allowing it to read uninitialized heap memory from the client. This...

CVE-2026-91955

A flaw was found in FreeRDP. FreeRDP contains a flaw where it fails to validate client-supplied desktop dimensions during the Graphics Command Channel GCC negotiation. A remote attacker can exploit this by sending crafted Remote Desktop Protocol RDP packets with zero or oversized dimensions. This...

CVE-2026-91950

A flaw was found in FreeRDP, where an out-of-bounds read vulnerability exists in the rdpdrdumppacket function. This is due to a 32-bit unsigned integer wraparound during buffer bounds validation. A malicious RDP server can send a specially crafted RDPDR packet, bypassing security checks and causi...

CVE-2026-91948

A flaw was found in FreeRDP. An authenticated client can send specially crafted, oversized messages to the server when the CHANNELOPTIONSHOWPROTOCOL feature is active. This can cause a buffer underflow, leading to corruption of memory and potentially allowing an attacker to execute malicious code...

CVE-2026-91947

A flaw was found in FreeRDP server. This use-after-free vulnerability exists in the DRDYNVC parser, where a channel pointer is dereferenced after its synchronization lock has been released. An authenticated client can exploit this by racing AUDIN channel closure messages against DRDYNVC data...

DEBIAN-CVE-2026-91964

FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in negosendnegotiationrequest when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious RDP server can trigger the overflow by sending an arbitrary-length field that gets written...

CVE-2026-91964

FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in negosendnegotiationrequest when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious RDP server can trigger the overflow by sending an arbitrary-length field that gets written...

CVE-2026-91961

FreeRDP before 3.31.0 contains a denial-of-service vulnerability in the URBDRC control-transfer request path that fails to validate OutputBufferSize before forwarding to the libusb backend. A malicious RDP server can send a control-transfer request with OutputBufferSize set to 65536, triggering a...

CVE-2026-91960

FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's StreamEnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame with a crafted 64-bit extended payload length to trigger integer...